104,000 miles on my 2009 X3 that I bought new. I did have an engine oil heat exchanger gasket begin to weep just off warranty. Part was $20.00 and the E-Torx socket set to change it was $25.00. It's been virtually trouble free ever since.

My '07 E90 didn't give me any problems either..... though I didn't keep it beyond the 3 year lease.